krasceovitz



4 sheets' sheet 2,.

(No Model.)

E. KRASCHGVITZ. HEATING APPARATUS.

Nos1o,4 45. Patented Jan. @-1885,

. 511,211,231. f. /ff y (No Model.) 4 Sheets-Sheet 3. E. KRASCHOVLTZ. HEATING APPARATUS Patented Jan. 6, 1885 (No Model.) 4 Sheets-Sheet 4.

E. KRASCHOVITZ. HEATING APPARATUS. No. 310,445. y-Pazened Jan. 1885.

UNiTnn STATES PATENT @Erica EDUARD KRASCIIOVITZ, OF REUDXITZ, NEAR LEIPSIC, GERMANY.

HEATING APPARATUS.

ESPECIFICATON forming part of Letters Patent No. 310,@45, dated January 6,1885.

(No model.)

T0 all whom, t may concern/.-

Be it known that I, EDUARD Knliscnovrrz, a citizen of Germany, residing at Reudnitz, near Leipsic, in the Empire of Germany, have invented a new Heating Apparatus, of which the following is a specification. f

The nature o'l" my invention consists in the arrangement of a rotating cylinder of suitable metal, against which one or more metal shoes are forced, whereby, through the friction produced between the surface oi" the cylinder and the surface of the shoe or shoes, the desired heat is obtained; and, further, in the application ot air or suitable iluid in the body of the cylinder acting, when expanding by an excess of heat, against a disk secured in the inside of said cylinder, which said disk communicates its motion to the shoe or shoes placed against the outside of the revolving cylinder, so as to move said shoe or shoes farther away, and thus regulate the heat produced automatically.

In the accompanying drawings, Figure I is a side view, Fig. II a top view, partly in section, and Fig. III a cross-section, of an apparatus with one friction-shoe applied. Fig. IV is a vertical section, and Fig. V a horizontal section, of a railroad-car, showing the arrangement of the apparatus under the seat of the car. Fig. VI shows an elevation, and Fig. VII an end view, of an apparatus with a number of friction-shoes. Fig. VIII is a longitudinal elevation, Fig. IX a top view, partly in section, and Fig. X an end view, of an apparatus with friction-clutch on the drivingpulley. Fig. XI is a cross-section at line e ,e

of rig. IX.

Similar letters represent similar parts in all the figures.

A is a cylinder ruiming in suitable bearings, B B, and provided with a pulley, C, on one end of its axis to give motion to said cylinder. Against oneside of this cylinderafriction-shoe, H, is arranged, fitting (Figs. I, II, III) tight against the circumference of the cylinder A. This shoe I-I is carried in a lever, D, turning on a fixed fulcrurn, d, and provided with an eccentric slot, d', in which the bolt h of the shoe II can move. The forward end of this lever D is acted upon by a spring, S, acting against said lever so as to force the shoe H tight against the circumference of the cylinder A. Dy the revolution of the cylinder A against the stationary shoe H a certain amount of heat is generated sui'iicient to heat a compartment of a railroad-car.

This apparatus may be placed under the seat in the car, as shown in Figs. IV and V, and the required motion communicated to the cyliuder A by means of a belt passing around the axle ofthe car. (See Fig. IV.)

vWhen a number of shoes I-I are arranged for the cylinder A to work against, as shown in Figs. VI, VII, and IX, these shoes are attached to a shaft or bar, E, supported in bearings E, capable of allowing a slight hcrizontal motion to said shaft or bar E. This bar E passes in this case through the eccentric slot d in the lever D, through which all the slices H are operated simultaneously. The shoes away from the direct action of the leverD are provided with springs F to press the saine against the face of the cylinder A, in case of any spring in the bar or shaft E.

To regulate the pressure of the shoe or shoes against the face or circumference of the cylinder A, and thereby regulate the amount of heat automatically, this cylindcrA is made hollow and iilled with air, gas, or fluid. A disk, G, is placed in one end of the cylinder. against which a spindle, a, passing through the center of one of the axes ofthe cylinder, works. The other end of this spindle a acts against a lever, K, connected through the rod k with a bell-crank, L, acting upon the lever D. (See Figs. I, II, and III.)

Through the heat of the cylinder A the air. gas, 0r fluid with which the cylinder is enea will be heated and will expand, acting thus against the disk G, and through the spindle n, lever Ii, rod k, and bell-crank L, upon the lever D so as to move the shoe or shoes away from the face or circumference of the cylinder A, reducing thereby the heat generated until the expansion of the air, gas, or fluid in the cylinder is reduced, when the action of the spring S forces the shoe or shoes again against the cylinder, and at the same time moves the above-mentioned levers back again into their normal position. Through the center of the opposite axis of the cylinder a small passage is made, closed by a valve, g, acting as asafety-valve. The lever K is attached and turns upon a fixed fulcrum, j'. f

IOO

Instead of moving the shoe or shoes away from the circumference of the cylinder Whenever the heat increases above a certain point, as above described, the driving-pulley C may be arranged with a clutch, M, sliding on a suitable key, m, fast to the axis of the eylinder A, and a suitable fork-lever, N, arranged to operate said clutch M, which said fork-lever N is connected through a rod, 7c', with the lever K, so as to move the clutch M away from its connection with the driving-pulley G Whenever said lever K is acted upon through the spindle a, and thus stop the revolution of the cylinder A. A spring, O, is inY that ease arranged, acting against the clutch M or against the fork-lever N, to force the saine back again against the pulley C. (See Figs. VIII, IX, and XI.)

To regulate the friction of the shoe or shoes against the surface of the cylinder A, or, if the same is arranged with a clutch, M, to stop the motion of the cylinder A, whenever it is desired to reduce the heat by hand and independent of the expansion force of the air, gas, or fluid in the inside ofthe cylinder A, a shaft, I), may be arranged,`aeting either upon the lever D, (see Fig. VII.) or against the fork-lever N, Figs. IX and XI. In the former ease the shaft l? is provided with a screw-thread Working in a fixed nut, Q, to retain the lever D, and consequently the position of the shoe or shoes against the face of the cylinder A, in a fixed position. (See Fig. VII.) In this case the arrangement of the spring S against the lever D may be dispensed with. Vhen this shaft P acts against the fork-lever N, a cam, R, is attached to said shaft P, Figs. IX, VIII, Which,\vhen the shaft P is turned, comes in contact with the fork-lever N to move the same so as to throw the clutch III out of gear. The action of the spring O forces the clutch M back again when relieved of the action of the cani R.

Vhat I claim as my invention, and desire to secure by Letters Patent, is- Y I. A rotating cylinder, A, in combination with one or more shoes, I-I, lever D,With eccentric slot d', and spring S, arranged to operate in the manner and for the purpose described.

2. A rotating eylinder, A, with one or more shoes, H, pressed against its circumference,

filled with air, gas, or fiuid, in combination with the internal disk, G, spindle n, lever K, rod 7i', bell-erank L, and lever D, supporting the shoe or shoes H, arranged to operate substantially in the manner and for the purpose set forth.

nn Unno KRAscr-rovrrz. l

Vitnesses:

J. UHLrG, 0. SCHMIDT. 

